Add Elm plugin to website's home page (#4163)
Add Elm plugin to website's home page (#4163)

* Add Elm plugin to website's home page

Supplements #4161

* Order plugins alphabetically

* Add link to elm-format

prettier/prettier,rattrayalex/prettier,existentialism/prettier,prettier/prettier,existentialism/prettier,jlongster/prettier,rattrayalex/prettier,existentialism/prettier,prettier/prettier,existentialism/prettier,rattrayalex/prettier,prettier/prettier